That's not entirely accurate.
Scotia and TD are big players in the space. They call it non-prime loans but it's definitely what anyone on this forum would call subprime. Interest rates of 19% to 29% are not unheard of.
Here's an article about a couple who signed a 25% loan from TD and called a newspaper to complain: http://www.cbc.ca/news/canada/british-columbia/couple-feel-robbed-by-25-interest-td-car-loan-1.2483342
Here's a link to Scotia's Special Finance Program: http://www.scotiabank.com/ca/en/0,,4625,00.html
I've studied the space a little bit and from what I remember, both banks don't segregate subprime from prime auto loans in their financials so it's hard to figure out the exact exposure but they both definitely have sizeable subprime auto loan books. I would guess that both banks have over a billion dollars each of receivables of subprime auto loans.